<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>15-标签语义化</title>
    <style>
        strong {
            font-weight: normal;
            text-decoration: underline;
        }

        strong:hover {
            cursor: pointer;
        }
        
        .image::before {
            content: url("bd_logo.png");
        }

        /*.image {*/
            /*background: url("bd_logo.png");*/
            /*display: inline-block;*/
            /*width: 560px;*/
            /*height: 280px;*/
        /*}*/
    </style>
</head>
<body>

<a href="http://www.baidu.com">百度(a)</a> <br>

<strong onclick="window.open('http://www.baidu.com')">百度(strong)</strong> <br>

<img src="bd_logo.png" alt=""> <br>

<strong class="image"></strong>

</body>
</html>